BS 8558:2015 Guide to the design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages. Complementary guidance to BS EN 806

What's BS 8558:2015?

BS 8558:2015 was developed to provide complementary guidance to the BS EN 806 suite of standards. Together, these documents provide best practice for the design, installation, alteration, testing, operation and maintenance of hot and cold water services for domestic use in buildings.

BS 8558:2015 bridges the gap in the BS EN 806 suite of standards and the withdrawn BS 6700, which excluded systems designed to work with steam or high temperature water. It provides UK guidelines to follow which do not currently exist elsewhere.

What's new in BS 8558?

BS 8558:2015 incorporates changes made in response to comments from BEAMA and has also been developed to work in conjunction with BS 8554:2015. Recommendations for flushing and disinfection have been revised to link more closely with the revised HSE ACOP L8 and HSG274 Part 2. Provides improved coverage of the control of Legionella, with references to PD 855468:2015. BS 8558:2015 also provides improved coverage of the control of Legionella, with references to the HSE’s ACoP L8 and HSG274 Part 2.

The new edition of BS 8558 also includes as an informative annex the pipe sizing calculations that originally appeared BS 6700.

Who should use BS 8558?

BS 8558 applies to anyone involved in the design, installation, testing, operation and maintenance of services supplying water for domestic use within buildings, including:

Water companies

Product manufacturers

Installers of water supply services in the UK

Organizations with an interest in water supply services in the UK and organizations referring to BS 6700 would also benefit from referencing BS 8558.